| Value | Category | Cases | |
|---|---|---|---|
| 1 | Daily | 1 |
10%
|
| 2 | 5-6 days per week | 2 |
20%
|
| 3 | 1-4 days per week | 1 |
10%
|
| 4 | 1-3 days per month | 4 |
40%
|
| 5 | Less than once a month | 2 |
20%
|
| Sysmiss | 158 |